Excessive fluoride is a global problem that not only affects water quality but may also cause harm to human health. The following are several methods for dealing with excessive fluoride:
1. Activated alumina adsorption method
Activated alumina is a commonly used defluoridation material that can effectively remove fluoride from water. This method is suitable for groundwater treatment, but the pH value of the raw water needs to be adjusted before use, and the pH value should usually be controlled at around 6.5. It should be noted that activated alumina will release a large amount of aluminum ions when the pH of the raw water is weakly acidic, which may cause excessive aluminum.
2. Reverse osmosis method
Reverse osmosis is an effective water treatment technology that can remove most impurities in water, including fluoride. This method is suitable for deep treatment of drinking water, but the investment and operating costs of the equipment need to be considered.
3. High-efficiency defluoridation agent treatment method
This is a simple and effective treatment method that can reduce the fluoride content in water by adding high-efficiency defluoridation agents. The specific operating steps include sampling and testing, calculating the dosage, stirring the reaction, adjusting the pH value, adding flocculants, etc. The advantage of this method is that the treatment equipment is simple and effective after adding, without complicated debugging.
Defluoridation agent is a drug for treating fluoride-containing wastewater. It is a high molecular polymer that can adsorb and flocculate fluoride ions in water. It can reduce the fluoride in industrial fluoride-containing wastewater to 0.2mg/L, and can remove COD, chromaticity, total phosphorus, SS, and heavy metals in the water at the same time. Deep defluorination effectively helps industrial fluoride-containing wastewater to meet discharge standards.
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